org.apache.http.util
Class LangUtils

java.lang.Object
  org.apache.http.util.LangUtils

public final class LangUtils
extends Object

A set of utility methods to help produce consistent equals and hashCode methods.

Since:

4.0

Field Summary

static int	HASH_OFFSET
static int	HASH_SEED

Method Summary

static boolean	equals(Object[] a1, Object[] a2) Check if two object arrays are equal.
static boolean	equals(Object obj1, Object obj2) Check if two objects are equal.
static int	hashCode(int seed, boolean b)
static int	hashCode(int seed, int hashcode)
static int	hashCode(int seed, Object obj)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

HASH_SEED

public static final int HASH_SEED

See Also:

Constant Field Values

HASH_OFFSET

public static final int HASH_OFFSET

See Also:

Constant Field Values

Method Detail

hashCode

public static int hashCode(int seed,
                           int hashcode)

hashCode

public static int hashCode(int seed,
                           boolean b)

hashCode

public static int hashCode(int seed,
                           Object obj)

equals

public static boolean equals(Object obj1,
                             Object obj2)

Check if two objects are equal.

Parameters:

obj1 - first object to compare, may be null

obj2 - second object to compare, may be null

Returns:

true if the objects are equal or both null

equals

public static boolean equals(Object[] a1,
                             Object[] a2)

Check if two object arrays are equal.

• If both parameters are null, return true
• If one parameter is null, return false
• If the array lengths are different, return false
• Compare array elements using .equals(); return false if any comparisons fail.
• Return true

Parameters:

a1 - first array to compare, may be null

a2 - second array to compare, may be null

Returns:

true if the arrays are equal or both null